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Letter: ‘Flight Patterns Means More Noise’

In the article titled “Flight Pattern Set For Big Changes,” (The Roslyn News, Jan. 21, 2011) the FAA asserts that the additional traffic over the Roslyn/Manhasset area will not generate additional aircraft noise.  This assertion is contrary to the FAA’s own data that it provided in the environmental documents for this Airspace Redesign project.  The New Jersey Coalition Against Aircraft Noise (NJCAAN) has analyzed this information in detail.  Below is a summary table of our analysis of this FAA source data.  As the table illustrates, all of the aircraft noise pollution categories for Nassau County increase under the FAA’s re-routing scheme.  The increase in the 45-decibel category is centered on the Manhasset/Roslyn area and the surrounding North Shore communities.

NJCAAN continues to strongly recommend that Nassau County communities and their public officials analyze the flight patterns in detail and noise pollution data and draw their own conclusions about these planned new departure routes.  The changes in noise pollution data is available in arcane Excel spreadsheet format at the Internet link,

The FAA publishes changes in aircraft noise in this arcane DNL (decibel) format, while the agency refuses to publish changes in aircraft volume.  No surprise, in our opinion, since the public readily understands what an apparent additional 200 or so aircraft per day flying over their heads means.

  Flight Patterns +    Percent    

    Old    New    Increase    Increase    

45 DNL    998,860     1,060,013     61,153     6.1 %    

50 DNL    271,946     314,299     42,353     15.6%    

55 DNL    74,675     87,542     12,867     17.2%    

60 DNL    22,195     25,210     3,015     13.6%    

65 DNL    4,261     4,808     547     12.8%    

+ Old patterns represent the No Action or current    

procedures.  New patterns represent the Integrated    

 Airspace procedures.  Data represents individuals.      

Source: FAA; NJCAAN Summary.        

Robert Belzer,

President, NJCAAN